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Euro-500T Handy

Service manual

Version 1.0

Euro-500 Handy

Summary of Contents for Euro-500T Handy

Page 1: ...Euro 500T Handy Service manual Elcom Ltd Version 1 0 Euro 500 Handy...

Page 2: ...Neither this manual or any part of it may be copied or distributed without the consent of the Elcom company All rights of Elcom Ltd are reserved...

Page 3: ...3 3 Displays 17 2 3 4 Communication circuits 20 2 3 5 Interconnection of FM circuits 21 2 3 6 Other circuits 22 3 THE MLT 288 THERMAL PRINTER 24 3 1 Basic layout 24 3 2 Thermal head 24 3 2 1 Thermal h...

Page 4: ...3 The test of serial interface for the external PC keyboard 51 5 5 Test of cash register drawer 52 5 6 Fiscal memory tests 52 5 6 1 Tests of data reading from the fiscal memory 52 5 6 2 Test of data...

Page 5: ...channels is the center of the cash register The cash register program is stored in the 256 kB EPROM Depending on the program version in EPROM memory the micro controller works with RAM memory with a c...

Page 6: ...at 6 5 A Being a switching supply with a voltage oscillation frequency of 72 kHz it prevents network interference Its 80 efficiency provides for the effective voltage conversion and low loss of heat m...

Page 7: ...switched on by a PWRSW on off switch connected through AVA 5400 2P S 2 pin connector T14 T15 and T16 transistors produce VCC1 voltage for the second group of logical circuits They are operated by a mi...

Page 8: ...ing the VBAT1 and VH values the latter are lower approximately by 0 8 1 V loss in D15 diode Figure 2 4 Printer connection circuit 2 1 5 Secondary connection circuit The secondary connection circuit pr...

Page 9: ...tion circuits values 6V 0 3V 1 V for the lead battery without the external adapter 6 5 0 3V for the lead battery with the external adapter 7 6 0 8V 1V for NiMh battery without the external adapter 8 4...

Page 10: ...layout and Table 2 1 for its description Figure 2 7 E 500N micro controller VRAMx FM AL CN0 FM AH CN1 A16 CN2 FM DIR SCL SDA FM SEL FM PGM VPP GEN NC GND TXD0 TXD1 RXD0 RXD1 EKB DAT EKB CLK FD0 FD1 FD...

Page 11: ...O 7 bit FM data scanning JP6 jumper condition 27 34 D0 D7 I O data bus 35 VRAMx I 5 V power supply 36 43 A0 A7 O address bus 44 GND I 0 V power supply 45 55 A8 A18 O address bus 56 NC NC 57 GND I 0 V...

Page 12: ...Euro 500T Handy cash register data memory to up to 512 kB A0 12 A1 11 A2 10 A3 9 A4 8 A5 7 A6 6 A7 5 A8 27 A9 26 A10 23 A11 25 A12 4 CS1 22 A17 30 W E 29 OE 24 D0 13 D1 14 D2 15 D3 17 D4 18 D5 19 D6...

Page 13: ...an 4 5 V The standby controller is a circuit with these functions reliable abandonment of E 500N micro controller standby position when the cash register is being switched on STBY signal activation fo...

Page 14: ...14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 CLK 11 VC C 20 GND 10 U5 74H C374 STB1 STB2 STB3 STB4 STB5 STB6 W M OT P LATCH PR SEL D0 D1 D2 D3 D4 D5 D6 D7 1 2 3 GND 7 VC C 14 U6A 4 5 6 U6B 74H C00 HW R CS4 8...

Page 15: ...3 and 7 7 which interconnects all the mechanisms situated in the upper tip up part of the cash register Two 15 conductor cables situated in the grooves of the tip up construction connect the printer t...

Page 16: ...cable which is inserted to the KEYBOARDCON connector on a keyboard side and to the KEYB connector on a mainboard side Figure 2 18 Euro 500T Handy keyboard scheme The course of signals on 7442 decoder...

Page 17: ...the regulation of the cash register display Each display is controlled by its own NJU6432B type controller If requested it is possible to supply the particular display units with back light panels D1...

Page 18: ...mented display consists of 96 segments The display segments are activated by COM1 and COM2 signals The display is controlled by the NJU6432B type 53 segmented controller with a switching function It e...

Page 19: ...Elcom Ltd Service manual 19 Euro 500T Handy Figure 2 22 Posting of displays in Euro 500T Handy segment segment Figure 2 23 Posting of displays in Euro 500T Handy alpha segment...

Page 20: ...gramming Adjustable transmission parameters for both communicating appliances are defined in the following way communication speed for computer programmable 9600 or 38 400 Bd communication speed for s...

Page 21: ...PGM FM SEL VFD VFP VC C C21 100n C22 100n VFD VFP R36 47k R39 47k FM AL CN0 FM DIR SCL FM PGM FM SEL VC C JP2 FM 2p A 1 6 C N 2 F D 0 F D 1 F D 2 R W 2 F D 3 R W 3 F D 4 R W 4 F D 5 J P 4 F D 6 J P 5...

Page 22: ...t checks the voltage value of the primary supply as well as the connectivity of the network adapter Figure 2 27 Circuit of power supply control b Buzzer control The Euro 500T Handy cash register uses...

Page 23: ...register connectors 1 2 3 4 5 6 SCR SCL Modular 6 pin GND SC RRxD SC LRxD SC LTxD VC C AD P DRW 1 2 3 4 DRAWER Modular 4 pin PC TxD PC RxD GND 1 2 3 4 5 6 PC Modular 6 pin 1 2 3 4 5 6 EXTKEYB Minidin...

Page 24: ...000 pulses print density 12 5 and more receipt length 50 km and more Range of operation temperature 0 to 45 C Range of storage temperature 20 to 60 C Range of operation moisture 35 85 RH Range of stor...

Page 25: ...3 2 4 Thermistor layout a electrical characterization resistance 30 kW 5 at 25 C B constant 3950 K 2 b ranges temperature range 40 C to 125 C c relation between temperature and resistance RX thermist...

Page 26: ...1 dot line 1 2 3 4 H L H L L L H H 1 2 3 4 Step 1 High Low Low High Step 2 High Low High Low Step 3 Low High High Low Step 4 Low High Low High Signal name Sequence Item Specification Type PM Number of...

Page 27: ...ctivated in its upper position Type Mechanical reed switch Head up connected Head down disconnected Range DC 15 V 1 A Touch resistance 70 mW max 3 5 Sensors of paper ribbon end The printer has an inte...

Page 28: ...r power circuits 2 VH Power supply of printer power circuits 3 DATA IN Serial data input 4 GND Ground 5 TS Thermal sensor output 6 STB 1 Activation signal 1 7 STB 2 Activation signal 2 8 VCC1 Connecti...

Page 29: ...Never use for cleaning such items as sand paper scissors or any other sharp objects as they may damage the head 2 Make sure the alcohol evaporates before you start cleaning 3 Clean only when the cash...

Page 30: ...ot start to dismantle the cash register before you switch it off and disconnect the external adapter 1 Pull out the back cover by gripping the side lugs 2 Holding on to the display slit near the paper...

Page 31: ...r can be damaged when tightening screws in the wrong positions Be careful not to pull down the screw thread when tightening the screw Before the cover is closed check to see that all conductors and ca...

Page 32: ...sten the pad holding the accumulator in seizure Make sure the accumulator really holds tightly and doesn t jerk 9 Install the middle and front cover to the cash register undercover 5 3 1 2 4 Index Qua...

Page 33: ...r out 5 Separate the printer from the printer holder by screw loosing 6 Fasten the external sensor with the printer pads to a new printer and fasten it with the screws 7 Connect the cables and secure...

Page 34: ...otor 7 Insert a new motor into the fixing ribs see the picture motor seizure 8 Tighten the screws and make sure that they fit into the screw threads and hold on well Do not forget to use the fan pads...

Page 35: ...o the front cover 4 Replace the mainboard 5 Fasten a new mainboard with the fixing screws see the picture the front cover 6 Connect all the connectors beware of the exchange it can damage the electron...

Page 36: ...ement of SRAM with higher capacity 1 Switch the cash register off switch and disconnect the external adapter 2 Pull the middle cover out and then separate the front cover from the undercover chapter 4...

Page 37: ...register covers chapter 4 1 4 9 Keys and keyboard replacement Note When replacing the keyboard the cash register must be switched off and the external adapter disconnected 1 Pull the middle cover out...

Page 38: ...1 Pry the damaged key 2 Place a new key to the appropriate groove 7 6 9 5 1 1 8 4 2 3 Index Quantity Description Code 1 1 Front cover T15H500 2 1 Middle keys T04H500 3 1 Side keys T05H500 4 1 Main key...

Page 39: ...pull out the display with wires 5 Install a new display with a connecting board and affirm the wires and display using the smelting mass 6 Connect the connectors and reinstall the cash register middle...

Page 40: ...stall a new display with a connecting board 6 Connect the connectors and reinstall the cash register middle cover Replacement of customer display 1 Separate the slit of displays and the paper cover of...

Page 41: ...l adapter 2 Separate the middle and front cover from the undercover 3 Remove the cash register back cover as well as the motor with the motor holder 4 Connect check the interconnection of the connecto...

Page 42: ...ixing screws of the segmented display 3 Slide the LED back light under the LCD according to the picture Do it from the side opposite the electrolytic condensers 4 Solder the back light to the PCB of t...

Page 43: ...mmend using the Eurodrawer drawer offered in the Euro 500T Handy cash register distribution network 1 Switch the cash register off 2 Prepare the cash register drawer 3 Remove the original connector 4...

Page 44: ...44 Elcom Ltd Service manual Euro 500T Handy 4 14 Connecting of external keyboard Any keyboard with a PS 2 interface can be connected to the cash register PS 2 NC Vcc NC Data Ground Clock...

Page 45: ...egister through the 6 pin Modular Jack connector situated on the cash register back panel The set up of the communication parameters RS 232 for the scanner and scales must correspond to the set up of...

Page 46: ...lays Displayable elements will gradually appear on both displays The method for starting the displays test 1 Switch the cash register to the programming mode P 2 Press the number 100 on the numeric ke...

Page 47: ...case of faulty printing see chapter 6 3 Printing failures 5 2 2 Testing of scanning the thermal printer head position The method for starting the test 1 Switch the cash register to the programming mo...

Page 48: ...in the sensors will be displayed 2 Sliding the paper in and out from the sensors will change the paper presence condition illustrated on the display Press any button on the keyboard to finish the tes...

Page 49: ...the buttons of the keyboard in the direction of arrows 2 If the button is pressed in wrong order a sound signal will announce that the fault has been made It will remain on until you press the correct...

Page 50: ...tion failures 5 4 2 Test of RS 232C serial interface for the scanner and electronic scales This test serves as a means to check the correctness of serial data transmission and reception through MODULA...

Page 51: ...ransmission and reception through MODULAR JACK 6X6 MALE connector chapter 4 14 used for the interconnection of the cash register with the PC keyboard The method for starting the test of serial interfa...

Page 52: ...sible for reading verification and recording of data to the fiscal memory 5 6 1 Tests of data reading from the fiscal memory These tests serve to check data recorded in the fiscal memory It is possibl...

Page 53: ...description XX is defined 1X the first control data was not correctly read and verified from the fiscal memory 2X the second control data was not correctly read and verified from the fiscal memory 30...

Page 54: ...PGM and FM DIR signals are changed three times in the intervals of approx 1 2 sec 2 The test performance is displayed on the display and printed on the cash register printer Correct values log 1 min 3...

Page 55: ...ting the test 1 Switch the cash register to the programming mode P 2 Press the number 900 on the numeric keyboard 3 Press l Multiply button TEST 800 8464 Adapter connected Battery 8 79 V TEST 900 The...

Page 56: ...onnection of the switch cable to the main PCB PWRSW connector use the multimeter to check the functionality of the switch it is situated on the keyboard PCB damaged cable between the board of connecto...

Page 57: ...eted RAM memory each time the cash register is switched on faulty reserve NiCd battery replace the NiCd battery use the same type of the battery only wrong position of JP1 jumper the right position du...

Page 58: ...le results in the cyclic generation of RST signal the system drops out during printing or alternatively after it is switched on the adapter is disconnected almost discharged battery recharge the batte...

Page 59: ...e of VCC1 voltage if any fault occurs see chapter 6 1 damaged printer stepping motor replace the printer jammed mechanism of the printer platen replace the printer dirt crumpled up paper in the slot f...

Page 60: ...rconnection of PCB Interconnect and the customer display check if the customer display connector is properly pushed in check the entirety of the cable too faulty module of the display replace the whol...

Page 61: ...JP1 jumper it should be closer to NiCd battery check the value and soldering of R9 resistor check the value of VRAM voltage the date and time do not increase an incorrect fact is displayed it is not p...

Page 62: ...jacket as far as an electronic component is concerned and its order code 7 1 Classification of cash register components List of electronics mainboard components 7 2 List of keyboard components 7 3 Lis...

Page 63: ...60 C54 100n 805 S044060 C55 100n 805 S044060 C27 100n 805 S044060 C68 100n 805 S044060 C19 100n 805 S044060 C20 100n 805 S044060 C36 100n 805 S044060 C4 100n 805 S044060 C26 100n 805 S044060 C37 100n...

Page 64: ...1094 R2 10k 805 S041094 R109 10k 805 S041094 R93 10k 805 S041094 L2 120u 625mA FERITCORE2 S040070 L1 120u 2A FERITCORE S040071 C51 15p 805 S044058 C50 15p 805 S044058 C52 15p 805 S044058 C53 15p 805 S...

Page 65: ...4026 R78 220R 805 S041109 R79 220R 805 S041109 R76 220R 805 S041109 R13 220R 805 S041109 R11 220R 805 S041109 R77 220R 805 S041109 R18 220R F 805 S041121 R107 22k 805 S041090 R102 22k 805 S041090 R32...

Page 66: ...6103 W M AVA 5400 2P S S1G2M S046103 BATT AVA 5400 2P S S1G2M S046103 PWRSW AVA 5400 2P S S1G2M S046103 JPB3 Connector pins JUMP2 S046076 JPB3 Connector JUMPER black S046006 JPB2 Connector pins JUMP2...

Page 67: ...nnector pins JUMP2 S046076 JP4 Connector JUMPER black S046006 U1 HD 6433044SA00F FP 100B S043124 U9 HIN202 SO16 S043115 U14 KA278R05 TO220F 4L S043155 U2 KM681000A PSOP32 S043017 U17 L293D DIP16 S0431...

Page 68: ...Handy MB v1 21 Description Signature Jacket Code 100n C1 1206 S044060 74HC42 U1 SO16 S043087 BONDTACT PS 11D01 SW PWR BONDTACT PS 11D01 S040073 FFC KEYBOARDCON Molex 52793 1690 S046161 LL4148 D7 SOD80...

Page 69: ...2 EL2 0D5 T S044016 47k R1 0805RW B S041107 47k R2 0805RW B S041107 100k R4 0805RW B S041095 3R9 0 25W R3 AXIAL10 T S041050 LCD back light D1 LIGHT T S040054 LL4148 D2 SOD80W B S042025 LL4148 D3 SOD80...

Page 70: ...cription Signature Jacket Code 2 pin cable with 360 mm connector REAR2 S1G2M S046036 DS 210 D Bond tact POWER DCPOWERJACK Minidin 6 pin EXTKEYB DIN KB S046047 Modular 4 pin DRAWER MODULAR4 S046027 Mod...

Page 71: ...nnector PR DISP2 MOLEX53047 1510 S046169 PCB Intercon Euro 500 Handy in 1 1 S047059 7 6 2 List of components on interconnection board of Euro 500T Handy alpha segment Top Overlay Bottom Overlay contin...

Page 72: ...S044058 S044062 87LPC762 U1 SO20 1k R1 R9 805 S041103 220R R3 805 S041109 2k R2 805 47k R4 R5 R6 R8 805 S041107 2SK1079 T1 SOT89 S045026 it posts in Elcom EBM2012 B1 B2 B4 B5 B6 B7 B8 B9 B10 B11 B12...

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